curt in flint, michigan. caller: good morning. one quick comment. then i will hang up. criminals do not care what laws you put in, they will get the weapons, get whatever they need to get the job done. thank you. goodbye. guest: that is certainly true to the extent that that is how criminals think. this is a problem that people disagree with what the solution will be, the problem being gun violence like the shooting on friday. if we all agreed on exactly what the solution work, then congress would pass it tomorrow, but they do not agree. i think we will see a debate about the most effective solutions. do they have to do with mental health? when the ding the supply of fire arms? the combination? are there other things that can be done? -- limiting the supply of fire arms. host: this is a tweet in one to build a question from it. do you have a definition of an assault and gun rifle, and whether or not you do or not, as well could the president change the definition of assault? guest: that is a fascinating question. if you look at legislation that has been introduced in th